When compiling tens of clips into one finished film, your device performs hardware-accelerated video decoding and encoding. If your export gets interrupted, follow these steps:
Troubleshooting Checklist
1. Progress Bar Freezes or Fails
- Check Storage: If free storage drops below 2GB, the system cannot allocate temporary files for the new video.
- Fix: Free up at least 3GB of device storage space in system settings, then retry the export.
2. App Interrupted in Background
- Mobile operating systems throttle or suspend hardware media encoders when apps are minimized or the screen locks.
- Fix: For long Vlog projects, keep CocoCut open on the export progress screen until rendering completes.
3. Clips Stored in iCloud ("Optimized Storage")
- Symptom: Black screen frames or sluggish loading.
- Cause: If device storage optimization is active, original video data may only exist on remote cloud servers.
- Fix: Open your device's native Photos app, play the specific video once to force a local cache download, then return to CocoCut.
4. Export at 720P first
- Compiling numerous clips on older hardware can strain device memory.
- Fix: Export at 720P 30fps first. It is the free default, and it renders faster and more reliably. 1080P and 4K use more memory, and non-members only get 2 free exports between them.